Kielland C, Skjerve E, Zanella A J
Norwegian School of Veterinary Science, 0033 Oslo, Norway.
Vet Rec. 2009 Aug 29;165(9):254-8. doi: 10.1136/vr.165.9.254.
Three hundred veterinary students were divided randomly into two groups to answer a questionnaire inquiring how painful they considered 23 conditions affecting cattle (seven of which were illustrated) to be, on either a numerical rating scale (NRS) or a visual analogue scale (VAS). The individual responses were used to assess whether cluster analysis could be used to divide the population into distinct groups. The ratios of men to women in the two groups were similar. The NRS scores ranged from 1 to 10 and the VAS scores ranged from 0 to 10. The conditions that were illustrated with a picture had a wider range of scores (2.65 to 9.0 v 2.67 to 7.93) and a slightly higher mean score (5.71 v 5.34) than those without pictures. Fracture of the tuber coxae, dystocia requiring the help of two people, and serious mastitis, were scored as the most painful conditions in adult cattle. Using the median score of each student as an outcome, their sex and year of enrollment and the scoring scale were significant. Women scored 0.9 points higher than men. Cluster analysis revealed two distinct groups in both the VAS and NRS, but the distribution was more even among the students using the VAS. This group was used in further analysis, and one cluster had the most men and more students with several siblings.
300名兽医专业学生被随机分为两组，通过数字评分量表（NRS）或视觉模拟量表（VAS）回答一份问卷，询问他们认为影响牛的23种病症（其中7种配有插图）有多疼痛。个体反应用于评估聚类分析是否可用于将人群分为不同的组。两组中的男女比例相似。NRS分数范围为1至10，VAS分数范围为0至10。配有图片说明的病症得分范围更广（2.65至9.0对比2.67至7.93），且平均得分略高于无图片的病症（5.71对比5.34）。髋结节骨折、需要两人协助的难产以及严重乳腺炎被评为成年牛最疼痛的病症。以每个学生的中位数分数作为结果，其性别、入学年份和评分量表具有显著性。女性得分比男性高0.9分。聚类分析在VAS和NRS中均揭示了两个不同的组，但在使用VAS的学生中分布更为均匀。该组用于进一步分析，其中一个聚类男性最多，且有多个兄弟姐妹的学生更多。
